openocd: use macro ARRAY_SIZE()

There are still few cases where the macro ARRAY_SIZE() should be
used in place of custom code.

Use ARRAY_SIZE() whenever possible.

Change-Id: Iba0127a02357bc704fe639e08562a4f9aa7011df
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/6260
Reviewed-by: Xiang W <wxjstz@126.com>
Tested-by: jenkins

src/jtag/drivers/xds110.c

@@ -356,7 +356,7 @@ static bool usb_connect(void)
 			/* Check for device vid/pid match */
 			libusb_get_device_descriptor(list[i], &desc);
 			match = false;
-			for (device = 0; device < sizeof(vids)/sizeof(vids[0]); device++) {
+			for (device = 0; device < ARRAY_SIZE(vids); device++) {
 				if (desc.idVendor == vids[device] &&
 					desc.idProduct == pids[device]) {
 					match = true;